Centrifugal machine.



P. M. GROVEH` CENTRIFUGAL MACHINE.

`APPL|cAT1oN FILED AP1=.1`5. 1915.

1 1 1 89,8 1 2. Patented July 4, 11116,

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atroz-nem 5 l UNITED STATES PATENT oFFIoE.

PERRY m.' Gnovnn, or EnNFoLn sasKaTcHEWAN, CANADA.

To allwhom it may concern;

YBeit known that I; PERRY M; GRovER, a citizen ofthe United States, .residing at Ernfold,` in the county of Saskatchewan, Canada, have-invented new and useful 'Improvements in Centrifugal Machines, 'of which the following is .a specification.

This invention relates to centrifugal niachines 4and .particularly to those machines used in themanufacture of sugar, in which it is necessary and desirable .to 'separate the `dii'erentgrades ofl liquider runnings thrown off from the' centrifugal. during the 'separation of the liquid from the. solid matter within the centrifugal drum.

One' feature' of the invention consists 'i of' providing aA machine having two separateL curbs jorl lca'sings surrounding the centrifu-l v-gal drum, the outer curb being-stationary 1 drawing in'which,

and the inner one movable. The inner 'curb be'. raised to` hang between the 'centrifugal l drumv and the outer curbor may be lowered l-t'o leave' the Space. between these 'two Amein-f bersv unobstructed. 4

Another object of the invention is to provide a centrifugalmachine whichmay be'y easilyfcle'aned and operated. It h`a been found that the simplicityofthe ma'hlne 'den which willnot 'become 'fouled by the heavy -the vspecific arrangement-and forms of the catch troughs for the syrup; and limit stops for' the movement fof; the inner curb.

The. invention consists of the novel coil? claims f and illustrated' in the 'accompanying- 1'r epres e'nts the Outencasingfor curb of a centrifugalmachine. 2 '1s'v a perforate screen yof' a centrlfugal I drum, 3 is its upper'flange' and 4 lis the' base .of the drum. .Power vmay be obtained from any suitable source: -Thedrnm 2 is shown mounted to turnwith 'the shaft 5 andpu'lley" wheel; 6, a spider 7 on'the shaft' connecting the base 4 withthe shaft. The base of the drum around the shaft'' is provided with a valve opening y8 concentric A with the shaft. for Athe .discharge of the4 vcrystallized sugar:v

specification of Letters ratnt..

is arranged for lmovement so that it may scribedand 'the .small-numberlof- .working parts' provide such 'a structure an'dbon'eI `Further objects of theinvention includevstruction, arrangement and. operation of the parts andwill be more fully'describedand'set forth in thefollowing specification and or other solid matter remaining in the drum.

A'cover 9 is adapted `to .slide -on the shaft- 5 and close the valve opening 8. Immediately below the valve opening 8 is a chute- 10 through which sugar dumped from the drum passes on its way'to a trough. 1:1 below.

A scroll or lscrew conveyer in this trough it away for further treatment.

' isarranged to withdraw the-mass and carry 3A Vsecond or auxiliary curb or casing 12- is .suspended betweenjthedrum 2 andouter casing l1. This curb is designed tobe of imperforate metal, preferably cylindrical in form and'is hung by rods 13 or. other means.

Suitable power and. Control. means are pro- .vided for raising 'or lowering the auxiliary casing by these rods. VA An efficient form is shown in the drawing in which a four-way. cock 14 controls themovement of the '-pi'ston. .rod 15 4inthe-fluid motorl. It will be y 'obvious that'when the piston is forced down theconnecting ropes will pullI the rods- 13 1-. 'A reyerse movement lowthe p lane of the.- centrifugal. drum; Y.

In addition to the feature of having' an extra casing adaptedto be interposed luetween .the .drum and outer casingit will lee vobserved that' each casingis'provided with;

faseparateand independent gutter-mounted on and carried by .the"respectivecasings The outercasingzlhas connected at lits lowermost edge aguttenl.' This isfarranged to catch-any-'material dropping from the inf" ,ne'rwall of the casing. At thelower edge of the auxiliary casing 12 is irmly'mounted a gutter 18. which gutter f is arrangedV to catch "any material 'dropping from the inner face of the auxiliary casing, Eaehoffthese gutters 17 and 18 have their respective dis charge spente-17a and 18a leadingto their respective troughs or, tanks 171? TandflS". Near the top. of thejaux'iliary lcasing 12 and extending around the outer surface gis. a@

flange 19 which projects downwardly and outwardly'from the casing12.' This flange. serves* as spacingV means when, the/casingis inits 'uppermost-position, Vkeeping the auX- .'iliary casing concentric with the outer cas-- ing and the drum. xW'lien thecasing 12 1sV "lowered this angellQ' extends over the-edge 'off the gutter 17 V4 and limits downward moveyment of thecasing as well aspreventlngany.

rammed July 4,1916, Appiatmnmeaaprus,1915. serialno. A19,251.

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los l against the syrup thrown` from the drum is caught byA the auxiliary casing 12 and runs down the smooth inner walls thereof to the glitter 18 and escapes through the spout 18a into the trough 18b or other receptacle provided for the green syrup. lVhen the drum has ceased discharging and it is desired to wash the sugar therein the auxiliary casing is lowered and water may be applied to the sugarl in the drum. As this wash water and second batch of syrup leaves the drum it is thrown liquid-escaping through the glitter 17, discharge spouts 17 to the troughs or other containers 17", set aside for material of this class. In this manner the high purity and low purity s vrups are kept separate.

It will be obvious from the foregoing that this invention provides means for facilitating the operations of centrifugal machines. Heretofore it has been necessaryr in the manufacture of sugar to stop the centrifugal machine or change the position of the receiving tanks when it was desired to separate the different runnings taken from the machine. By the present method made possible by this invention a more economical handling of both machines and juices is provided, the boiling will not be so expensive and a discarded syrup will be provided having a much lowerpurity than was formerly possible. In addition to the sharp line which the machine makes possible between the high and low grade s vrups a most important feature is the absolute simplicity of the construction. The syrup comes into contact -with no working parts and llows over the smooth surfaces, insuring perfect cleanliness and freedom from the trouble conmion to most machines caused by the heavy syrup gumming the operating parts.

Changes in form, material, size and proportion of parts may be made without departing from the scope of the invention.

I claim:

1. A centrifugal machine comprising the combination of a main outer casing, a centrifugal drum therein, an auxiliary casing adjustably mounted between said drum and said outer casing, means for moving said auxiliarycasing bodily intoand out of operative relation with respect to said drum, and means on said auxiliary casing constituting a combined limit stop for said casing and cleaning means for the inner wall of said outer casing.

walls of the outer casing 1, the

,I ative relation with respect to said drum,

' of said gutter,

' projecting flange 2. A centrifugal machine comprising the combination of a main outer casing, a' centrifugal drum therein, an auxiliary casing adj ustably mounted between said drum and said outer casing, a gutter on said outer casing, -means for moving said auxiliary casing bodily into and out of operative relation with respect to said said auxiliary casing constituting combined spacing means for said auxiliary casing relative to said outer casing and limit stop for said auxiliary casing, said limit stop catching on said gutter to limit the movement of the auxiliary casing when the latter is in one extreme position.

3. A centrifugal machine comprising the combination of a main outer casing, a centrifugal drum therein, an auxiliary casing means on said auxiliary casing extendingfrom the latter to said outer casing and constituting combined spacing means for said auxiliary casing relative to said outer casing and cleaning means for the inner wall of said outer casing.

4. A centrifugal machine comprising the combination of a main outer casing, a centrifugaldrum-therein, an auxiliary casing adjustably mounted between said drum and said outer casing, means for moving said auxiliary casing bodily into and out of oper 'an annular iange on said auxiliary casing extending from` the latter to said outer casing and constituting combined spacing means for said auxiliary casing relative toA said .outer casing and cleaning means for the inner wall of said outer casing.

5. A centrifugal machine comprising the combination of a main outer casing, a centrifugal drum therein,a gutter mounted on said outer casing, a rigid auxiliary casing adjustably mounted between said drum and said outer casing and adjacent said gutter, an oblique downwardly projecting flange on said auxiliary casing overhangng one edge and means to lower and raise said auxiliary casing bodily out of and into the operative position relative to said drum. y 6. A centrifugal machine comprising the combination of a main outer casing, a centrifugal drum therein, said outer casing, a rigid auxiliary casing adjustably mounted between said drum and said outer casing and adjacent said gutter, a gutter mounted on and carried by said auxiliary casing, an' oblique downwardly on said auxiliary casing over-hanging one edge-of the gutter on said outer casing, said auxiliary casing and gutter mounted thereon being smaller than said outer casing and gutter and free tov move drum, and means on a gutter mounted on I vertically 'within and closely adjacent to the latter.

7. A centrifugal machine comprising the combination of a rotary drum, a main outer casing, a movab-le auxiliary casing between said drum and said outer casing, means for moving said auxiliary casing vertically into and out of operative relation with respect to said drum, and a flange on said auxiliary casing extending around the same and projecting into close proximity to the inner surface of said outer casing, said flange p0sitioned to travel from the upper to the lower portionof said outer casing and vice versa during the movement of said auxiliary casing.

8. A centrifugal machine comprising the combination of a rotary drum, a main outer casing, a gutter connected with said outer casing provided with an inwardly extending rim, a movable auxiliary casing between said drum and said outer casing, means for moviing said auxiliary casing vertically into and out of operative relation with respect to said drum, and a flange on' said auxiliary casing extending around thel same and projecting into close proximity said outer casing, said fiange positioned to travel from the upper to the lower portion of said outer casing during'the, downward lmovement of said auxiliary casing and to rest upon said rim when said auxiliary casing is in its lowered position.

In testimony whereof I aix my signature in presence of two witnesses.

PERRY M. GRovER'.

Witnesses:

W. A. KEW, G. E. PITT.

to the inner surface of 

